Automatic train-stop



J. L. WOLF.'

AUTOMATIC TRAIN STOP.

APPLICATION FILED JUNE 27.1919.

1,380,671. Patented Feb. 10,1920.

2 SHEETS-SHEET l- WITNESS:

IN VEN TOR. BY JL. 1% Zf.

A TTORNE Y.

J. L. WOLF.

AUTOMATIC TRAIN STOP.

APPLICATION FILED JUNE 21.1919.

Patented Feb. 10, 1920.

2 SHEETSSHEET 2- IN VEN TOR.

WITH E55 7 A TTORNE Y.

JOHNL. WOLF, or LoeAivsronr; INDIANA.

AUTOMATIC TRAIN-STOP.

Specification of Letters Patent.

Patented Feb; 10; 1920.

Application filed June 27, 1919. Serial No. 307,180.

To all whom it may concern: v Be it known that I, J OHN L. WOLF, a citizen of the United States, residing at Logansport, in the county of Cass and Stateof Indiana, have invented new and useful Improvements in Automatic Train-Stops, of which the following is a specification.

This invention relates to an automatic train stop system and has for its primary object to simplify the construction of an apparatus of this character without sacrificing the efficiency thereof.

An object of the invention is to provide a train carried mechanism of few parts for bleeding the trainline for applying the air brake system and a track device of very few parts thrown to operative and inoperative position in the movement of the semaphore blade.

Besides the above my invention is distinguished in the manner of constructing the track device so that the major portion thereof will be protected from the elements and will be positive in its movement toward operative and inoperative positions.

WVith these and other objects in View the invention will be better understood from the following detailed description taken .in connection With the accompanying drawings, wherein Figure 1 is a view illustrating a locomotive about to enter a block with my invention applied thereto. v

Fig. 2 is an enlarged view of the track instruments.

Fig. 3 is a side elevation of the train carried mechanism.

Fig. 4 is a detail view of a portion of the track instrument.

Fig. 5 is a plan view of the track instrument. v

Fig. 6 is a horizontal sectional view of the train carried mechanism.

Fig. 7 is an elevation of the valve connected to the train line and the elements associated therewith.

Again referring to the drawings illustrating one manner in which the invention may be constructed, the numeral 1 designates a valve arranged in the train line 2 so that when in open position air will be bled from the train line so that the air brake apparatus may automatically operate. The air bleeding from the train line passes through a whistle 3 so that a signal may be given to the engineer when the mechanism has operated. To the stem of the valve I secure a gear 4 with which meshes a second gear 5 fixed to a vertically disposed shaft 6. This shaft has one end connected to an arm 7 while the other end has connected thereto a lever 8 arranged to engage the track instrument to be described later. Tothe arm 7 I connect a restoring rod 9, the handle portion 10 of which is arranged within convenient reach of the engineer so that when the apparatus has been operated he may very easily reset the same.

The track instrument consists of a casing 11 secured to the ties and having arranged in the top wall an opening 12 one wall 13 of which is arranged at an incline so as to allow the proper movement of the trip 1%. This trip 14L when in inoperative position completely closes the opening and is so arranged as to be completely protected. This trip let has a hinged connection 15 with a plate 16 which is pivoted on a rod 17 so as to swing in a horizontal plane. As far as I have proceeded it will be seen that upon throwing the plate about its pivot the trip 1 1 will be moved in a direction that its cooperation with the walls of the opening will cause the trip to assume a vertical position so as to engage the lever 8 of the train carried mechanism. The opening 12 is of a size to allow slight play of the trip so that shook may be absorbed in a manner now to be described. The plate 16 has depending ears 18 slidably mounted on an arcuate rod 19 carried by supports 20. Arranged between the supports 20 and the ears 18 are coil springs 21 for the purpose of absorbing shock. The plate 16 is connected to the semaphore blade 22 by a pair of cables 28 so that in the movement of the semaphore blade to danger or clear position it will automatically throw the track instrument to a danger or clear position so that the train carried mechanism may be operated accordingly.

From the foregoing description taken in connection with the accompanyin drawing, it will be apparent that I have provided an apparatus of simple substantial construction which is positive in its operation and the parts of the track instrument completely protected against distortion under climatic conditions. Of course it is to be understood that the invention may be constructed in various other manners and the parts associated in other relations and therefore I do not desire to be limited in any manner except as set forth in the claims hereunto appended.

What I claim is:

l. A track device comprising a casing having an opening arranged in the wall thereof, a trip mounted for movement in the opening and means for moving the trip in such a direction that the engagement between the wall of the opening and the trip will force the latter to operative position, and springs acting against the trip for absorbing shock.

2. A track device comprising a casing having an opening in its top wall, a trip for sliding movement in the opening, a plate having a hinged connection with the trip, a rod slidably receiving a portion of the plate, springs mounted on the rod acting against the plate for absorbing shock and a cable for connecting the plate to a semaphore.

3. A track device comprising: a casing having an opening, one wall of which is arranged at an incline, a trip mounted for movement through the opening and when in an inoperative position resting on the in clined wall so that the wall may guide the trip toward operative position, and means for giving movement to the trip.

In testimony whereof I aflix my signature.

JOHN L. WOLF. 

